LBT mirror. Researcher Roger Angel with the mirror for the Large Binocular Telescope (LBT). This metre telescope mirror is the largest ever cast.

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LBT mirror. Researcher Roger Angel with the mirror for the Large Binocular Telescope (LBT). This metre telescope mirror is the largest ever cast. The mirror's borosilicate glass has a honeycomb design which makes it strong but light. It was cast by a process of melting, moulding & spinning in a rotating oven. The mirror is then finely polished. Two identical mirrors will be placed on a common mount in the LBT constructed on Mount Graham in Arizona, USA. Together they will have the light-collecting power and image sharpness of a much larger single mirror. Roger Angel is director of the University of Arizona Mirror Laboratory in Tucson, USA. Photographed in 1997.

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Size: 3182px × 2579px
Photo credit: © DAVID PARKER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: angel, astronomy, astrophysics, binocular, graham, honeycomb, large, lbt, manufac., manufacture, mirror, mount, optical, roger, structure, tel, telescope